/* =============================================================================
   Base: reset, tipografia e primitivas de layout.
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
    scroll-padding-top: calc(var(--header-height) + var(--space-6));
}

body {
    min-height: 100dvh;
    background-color: var(--bg);
    color: var(--text);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* Luz ambiente discreta, no lugar das partículas antigas. */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(70rem 48rem at 6% -12%, rgba(61, 127, 214, 0.2), transparent 64%),
        radial-gradient(52rem 40rem at 96% 4%, rgba(142, 197, 255, 0.09), transparent 66%);
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 3;
    pointer-events: none;
    opacity: 0.045;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

body > * {
    position: relative;
    z-index: 1;
}

body.is-scroll-locked {
    overflow: hidden;
}

img,
picture,
svg,
video {
    display: block;
    max-width: 100%;
}

img {
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    background: none;
    border: 0;
    cursor: pointer;
}

ul,
ol {
    padding: 0;
    list-style: none;
}

a {
    color: inherit;
    text-decoration: none;
}

:where(a, button, [role="button"], input, select, textarea):focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 4px;
}

::selection {
    background: rgba(90, 166, 255, 0.38);
}

/* --- Tipografia ---------------------------------------------------------- */

h1,
h2,
h3,
h4 {
    font-family: var(--font-display);
    font-weight: 700;
    letter-spacing: var(--tracking-display);
    line-height: 1.12;
    text-wrap: balance;
}

h1 {
    font-size: var(--text-display);
    line-height: 1.05;
}

h2 {
    font-size: var(--text-h2);
}

h3 {
    font-size: var(--text-h3);
}

p {
    text-wrap: pretty;
}

em {
    font-style: italic;
}

strong {
    font-weight: 600;
    color: var(--text);
}

.lead {
    max-width: var(--reading);
    font-size: var(--text-lead);
    color: var(--muted);
}

.caption {
    font-size: var(--text-caption);
    line-height: 1.45;
    color: var(--muted);
}

.kicker {
    display: inline-flex;
    align-items: baseline;
    gap: var(--space-3);
    font-family: var(--font-ui);
    font-size: var(--text-kicker);
    font-weight: 600;
    letter-spacing: var(--tracking-kicker);
    text-transform: uppercase;
    color: var(--muted-soft);
}

.kicker__index {
    font-variant-numeric: tabular-nums;
    color: var(--accent);
}

.text-gradient {
    background-image: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    -webkit-text-fill-color: transparent;
}

/* --- Scrollbar ----------------------------------------------------------- */

@supports selector(::-webkit-scrollbar) {
    ::-webkit-scrollbar {
        width: 10px;
    }

    ::-webkit-scrollbar-track {
        background: var(--bg-deep);
    }

    ::-webkit-scrollbar-thumb {
        border: 3px solid var(--bg-deep);
        border-radius: 999px;
        background: rgba(255, 255, 255, 0.22);
    }

    ::-webkit-scrollbar-thumb:hover {
        background: var(--accent);
    }
}

/* --- Layout -------------------------------------------------------------- */

.container {
    width: min(var(--container), 100% - var(--gutter));
    margin-inline: auto;
}

.container--narrow {
    width: min(58rem, 100% - var(--gutter));
}

.section {
    padding-block: var(--section-spacing);
}

.section--tight {
    padding-block: clamp(3rem, 6vw, 5rem);
}

.rule {
    height: 1px;
    border: 0;
    background: var(--hairline);
}

/* --- Ícones -------------------------------------------------------------- */

.icon {
    width: 1em;
    height: 1em;
    flex: none;
    fill: none;
    stroke: currentColor;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.icon-sprite {
    display: none;
}

/* --- Acessibilidade ------------------------------------------------------ */

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip-path: inset(50%);
    white-space: nowrap;
}

.skip-link {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    z-index: calc(var(--z-overlay) + 10);
    padding: var(--space-3) var(--space-5);
    background: var(--accent);
    color: var(--bg);
    font-family: var(--font-ui);
    font-size: var(--text-kicker);
    font-weight: 600;
    letter-spacing: var(--tracking-ui);
    text-transform: uppercase;
    transform: translateY(-200%);
    transition: transform var(--duration-base) var(--ease-out);
}

.skip-link:focus-visible {
    transform: translateY(0);
}

/* --- Movimento ----------------------------------------------------------- */

@keyframes rise-in {
    from {
        opacity: 0;
        transform: translate3d(0, 16px, 0);
    }

    to {
        opacity: 1;
        transform: none;
    }
}

@keyframes kenburns {
    from {
        transform: scale(1.05);
    }

    to {
        transform: scale(1.12);
    }
}

@keyframes float-soft {
    0%,
    100% {
        transform: translate3d(0, 0, 0);
    }

    50% {
        transform: translate3d(0, -10px, 0);
    }
}

@keyframes glow-breathe {
    0%,
    100% {
        opacity: 0.55;
        transform: scale(0.96);
    }

    50% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes rule-draw {
    from {
        width: 0;
        opacity: 0;
    }

    to {
        width: 5rem;
        opacity: 1;
    }
}

/* --- Reveal (somente com JS, nunca esconde conteúdo sem ele) -------------- */

.js [data-reveal] {
    opacity: 0;
    transform: translate3d(0, 16px, 0);
    transition:
        opacity var(--duration-slow) var(--ease-out),
        transform var(--duration-slow) var(--ease-out);
    transition-delay: var(--reveal-delay, 0ms);
}

/* Imagens soltas nunca ficam escondidas se o reveal falhar. */
.js img[data-reveal] {
    opacity: 1;
    transform: none;
}

.js [data-reveal].is-revealed {
    opacity: 1;
    transform: none;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}